import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

public class AttachExample {
  public static void main (String args[]) throws Exception {
    String host = args[0];
    String from = args[1];
    String to = args[2];
    String filename = args[3];

    // Get system properties
    Properties props = System.getProperties();

    // Setup mail server
    props.put("mail.smtp.host", host);

    // Get session
    Session session = Session.getInstance(props, null);

    // Define message

    // Create the message part 

    // Fill the message

    // Create a Multipart

    // Add part one

    //
    // Part two is attachment
    //

    // Create second body part

    // Get the attachment

    // Set the data handler to the attachment

    // Set the filename

    // Add part two

    // Put parts in message

    // Send the message
  }
}